Publication detail

The Efficient Way to Design Cooling Sections for Heat Treatment of Long Steel Products

KOTRBÁČEK, P. CHABIČOVSKÝ, M. RESL, O. KOMÍNEK, J. LUKS, T.

English title

The Efficient Way to Design Cooling Sections for Heat Treatment of Long Steel Products

Type

journal article in Web of Science

Language

en

Original abstract

To achieve the required mechanical properties in the heat treatment of steel, it is necessary to have an adequate cooling rate and to achieve the desired final temperature of the product. This should be achieved with one cooling unit for different product sizes. In order to provide the high variability of the cooling system, different types of nozzles are used in modern cooling systems. Designers often use simplified, inaccurate correlations to predict the heat transfer coefficient, resulting in the oversizing of the designed cooling system or failure to provide the required cooling regime. This typically results in longer commissioning times and higher manufacturing costs of the new cooling system. Accurate information about the required cooling regime and the heat transfer coefficient of the designed cooling is critical. This paper presents a design approach based on laboratory measurements. Firstly, the way to find or validate the required cooling regime is presented. The paper then focuses on nozzle selection and presents laboratory measurements that provide accurate heat transfer coefficients as a function of position and surface temperature for different cooling configurations. Numerical simulations using the measured heat transfer coefficients allow the optimum design to be found for different product sizes.

English abstract

To achieve the required mechanical properties in the heat treatment of steel, it is necessary to have an adequate cooling rate and to achieve the desired final temperature of the product. This should be achieved with one cooling unit for different product sizes. In order to provide the high variability of the cooling system, different types of nozzles are used in modern cooling systems. Designers often use simplified, inaccurate correlations to predict the heat transfer coefficient, resulting in the oversizing of the designed cooling system or failure to provide the required cooling regime. This typically results in longer commissioning times and higher manufacturing costs of the new cooling system. Accurate information about the required cooling regime and the heat transfer coefficient of the designed cooling is critical. This paper presents a design approach based on laboratory measurements. Firstly, the way to find or validate the required cooling regime is presented. The paper then focuses on nozzle selection and presents laboratory measurements that provide accurate heat transfer coefficients as a function of position and surface temperature for different cooling configurations. Numerical simulations using the measured heat transfer coefficients allow the optimum design to be found for different product sizes.

Keywords in English

heat treatment; quenching; heat transfer; heat transfer coefficient; Leidenfrost temperature; cooling section design; steel

Released

26.05.2023

Publisher

MDPI

Location

Basel, Switzerland

ISSN

1996-1944

Volume

16

Number

11

Pages from–to

1–13

Pages count

13

BIBTEX


@article{BUT183607,
  author="Petr {Kotrbáček} and Martin {Chabičovský} and Ondřej {Resl} and Jan {Komínek} and Tomáš {Luks},
  title="The Efficient Way to Design Cooling Sections for Heat Treatment of Long Steel Products",
  year="2023",
  volume="16",
  number="11",
  month="May",
  pages="1--13",
  publisher="MDPI",
  address="Basel, Switzerland",
  issn="1996-1944"
}